End Mill Troubleshooting
| Short Life | Use Coated Tool for added Lubricity Clean Material Surface Replace or Correct Coolant Mixture |
| Chip Packing | Reduce Feed Rate Increase RPM Decrease Flute Count To Create Chip Clearance Increase Helix Angle for Added Chip Room Raise Coolant Volume |
| Poor Surface Finish | Reduce Feed Rate Increase RPM To Protect Against Edge Build-Up Replace Tool Increase Helix Angle Reduce Depth of Cut Increase Coolant Volume To Prevent Chip Welding |
| Workpiece Burring or Chipping | Replace Tool Use Appropriate Helix Angle for Material Reduce Feed Rate Reduce Depth of Cut |
| Workpiece Inaccuracy | Replace Tool Holder, Perhaps Shorter and More Rigid Use Larger Spindle for Extra Rigidity Increase Flute Count Shorten Length of Cut for Extra Rigidity Place Tool further in Holder To Maximize Rigidity |
| Chipping | Reduce Feed Rate Break-in Tool Increase or Reduce RPM Based on Harmonics Tighten Tool Shorten Length of Cut for Extra Rigidity Place Tool further in Holder To Maximize Rigidity |
| Wear | Reduce RPM Increase Feed Rate Use Coated Tool Reposition Coolant Lines for Enhanced Chip Evacuation Use Appropriate Helix Angle for Material Replace or Correct Coolant Mixture |
| Breakage | Reduce Feed Rate Reduce Depth of Cut Place Tool further in Holder To Maximize Rigidity Replace Tool Sooner Reposition Coolant Lines for Enhanced Chip Evacuation |
| Chattering | Reduce Feed Rate Replace Tool Holder, Perhaps Shorter and More Rigid Use Larger Spindle for Extra Rigidity Tighten Workpiece Reduce Depth of Cut Place Tool further in Holder To Maximize Rigidity |